diff --git a/notebooks/covid_eda_modular.py b/notebooks/covid_eda_modular.py
index d162e11..c6e19ab 100644
--- a/notebooks/covid_eda_modular.py
+++ b/notebooks/covid_eda_modular.py
@@ -20,14 +20,14 @@
 
 # COMMAND ----------
 
-from covid_analysis.transforms import *
+from covid_analysis import transforms
 import pandas as pd
 
 df = pd.read_csv(data_path)
-df = filter_country(df, country='DZA')
-df = pivot_and_clean(df, fillna=0)  
-df = clean_spark_cols(df)
-df = index_to_col(df, colname='date')
+df = transforms.filter_country(df, country='DZA')
+df = transforms.pivot_and_clean(df, fillna=0)  
+df = transforms.clean_spark_cols(df)
+df = transforms.index_to_col(df, colname='date')
 # Convert from Pandas to a pyspark sql DataFrame.
 df = spark.createDataFrame(df)
 
diff --git a/tests/transforms_test.py b/tests/transforms_test.py
index 8fac7a0..33c20dc 100644
--- a/tests/transforms_test.py
+++ b/tests/transforms_test.py
@@ -4,7 +4,7 @@
 import os
 import pandas as pd
 import numpy as np
-from covid_analysis.transforms import *
+from covid_analysis import transforms
 from pyspark.sql import SparkSession
 
 
@@ -30,28 +30,28 @@ def colnames_df() -> pd.DataFrame:
         ],
     )
     return df
-  
+
 
 # Make sure the filter works as expected.
 def test_filter(raw_input_df):
-    filtered = filter_country(raw_input_df)
+    filtered = transforms.filter_country(raw_input_df)
     assert filtered.iso_code.drop_duplicates()[0] == "USA"
 
 
 # The test data has NaNs for Daily ICU occupancy; this should get filled to 0.
 def test_pivot(raw_input_df):
-    pivoted = pivot_and_clean(raw_input_df, 0)
+    pivoted = transforms.pivot_and_clean(raw_input_df, 0)
     assert pivoted["Daily ICU occupancy"][0] == 0
 
 
 # Test column cleaning.
 def test_clean_cols(colnames_df):
-    cleaned = clean_spark_cols(colnames_df)
+    cleaned = transforms.clean_spark_cols(colnames_df)
     cols_w_spaces = cleaned.filter(regex=(" "))
     assert cols_w_spaces.empty == True
 
 
 # Test column creation from index.
 def test_index_to_col(raw_input_df):
-    raw_input_df["col_from_index"] = raw_input_df.index
+    raw_input_df["col_from_index"] = transforms.index_to_col(raw_input_df)
     assert (raw_input_df.index == raw_input_df.col_from_index).all()